<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        div{
            height: 750px;
            background-size:cover;
            background-repeat: no-repeat;

            background-attachment: fixed;

        }
        .box1{              
            background-image: url(01.png);

        }
        .box2{
            background-image: url(002.png);

        }
        .box3{
            background-image: url(003.png);

        }
    </style>
</head>
<body>
    <div class="box1"></div>
    <div class="box2"></div>
    <div class="box3"></div>
</body>
</html>